According to some views, serpentinization is a very rare process, and serpentine found inside meteorites were formed already in the planetary nebula or during accretion [1]}.
There may have also been other changes inside the planetesimals that could alter serpentine.
For instance, members of the serpentine family may have been dehydrated and/or altered by heat.
Serpentinization itself can produce significant heat, which can cause serpentine to become amorphous, as it has already been found in some meteorites [2]}. This is probably the reason why no well-crystallized serpentine minerals have been observed.
